Installation of cables for electrical calculations

Symbol
$inst_{elec}$
Choices
IdInstallationInfo
11 cable1 single-core or multi-core cable
22 cables2 single-core cables of a DC system or two-phase system (e.g. 16.7 Hz railway system)
33 cables flat3 single-core cables of a three-phase system in flat arrangement (vertical or horizontal)
43 cables trefoil3 single-core cables of a three-phase system in trefoil arrangement (equilateral triangle)
53 cables rectangular3 single-core cables of a three-phase system in rectangular arrangement (right isosceles triangle)